Asynchronously closes the file enumerator.
If cancellable is not `NULL`, then the operation can be cancelled by triggering the cancellable object from another thread.
If the operation was cancelled, the error [error@Gio.IOErrorEnum.CANCELLED] will be returned by [method@Gio.FileEnumerator.close_finish()]
.
| this |
a file enumerator |
| io_priority |
the [I/O priority](iface.AsyncResult.html#io-priority) of the request |
| cancellable |
optional cancellable object |
| callback |
a callback to call when the request is satisfied |
| user_data |
the data to pass to |